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- N butyl 2 ethoxy thioacridone was prepared from o chloro benzoic acid and p phenetidine by means of Ullman reaction,cyclization,N alkylation and sulfurization. 以鄰氯苯甲酸和對乙氧基苯胺為原料,經(jīng)過(guò)胺的苯基化、二芳胺的環(huán)化、N-烷基化、硫代化反應合成了N-丁基-2-乙氧基硫代吖啶酮。
- The synthesis of butyl，2－etheylhexyl，decyl and dodecyl methacrylates by ester interchange was studied.A suitable system of catalyst and inhibitor was obtained. 采用酯交換工藝，有機錫為催化劑，進(jìn)行了甲基丙烯酸丁酯、甲基丙烯酸－2－乙基己酯、甲基丙烯酸正癸酯、甲基丙烯酸正十二醇酯等高碳烷基酯合成反應過(guò)程的研究。
- Will 2,000 dozens be enough for selling? 兩千打夠賣(mài)嗎？
- The counselor bilked his clients out of$2 million. 那位顧問(wèn)從他的顧客那里騙取了200萬(wàn)美元。
- Every afternoon the baby takes a nap for 2 hours. 每天下午寶寶都要睡兩個(gè)小時(shí)。
- The gentamicin-poly(butyl cyanoacrylate) nanoparticles were prepared by emulsion polymerization and freeze drying. 用乳化聚合法制備慶大霉素聚氰基丙稀酸丁酯毫微球，經(jīng)冷凍干燥制成凍干型注射劑。
- He added 2 gallons of fuel to his car. 他給汽車(chē)加了2加侖油。
- She demonstrated that 2 and 2 are four. 她證明2加2等于四。
- If you subtract 2 from 8, you get 6. 8減去2是6。
- The book will run to nearly 2,000 pages. 這本書(shū)將厚達兩千頁(yè)之多。
- The bridge is almost 2 kilometers long. 這座橋差不多有兩公里長(cháng)。
- The compound butyl rubber is calendered. 將混制成的丁基橡膠進(jìn)行精壓。
- The diameter of the tree-trunk is about 2 meters. 這樹(shù)干的直徑大約是2米。
- No BCA invasion to the facial nerve was observed. 在1991到1993三年之間，本院?集了七例腮線(xiàn)的基底細胞腺瘤。
- This fossil may be over 2 million years old. 這化石可能超過(guò)二百萬(wàn)年了。
- The bridge is almost 2 kilometres long. 這座橋差不多有兩公里長(cháng)。
- To bring a butyl group into(a compound). 丁基化將丁基組引入（某化合物）
- The doors were numbered 2,4, 6 and 8. 這些門(mén)編為2、 4、 6、 8號。
- A lamb with 2 tails is a freak of nature. 有兩條尾巴的小羊是畸形的。
- He condensed his report from 2,000 words to 1,000. 他將報告從兩千字壓縮到一千字。
